I hate to see such a huge thread without adding something...
I've looked at rings and D rings. Both of them slipped without a knot behind them. I also had a rude awakening one evening when a hardware store ring decided to deposit my on the ground at 1:30 in the morning.
Asa result, I have been on a quest for cinch buckles that will work with 1" webbing while holding me up without releasing.
That's what I came up with. I've ordered a few already, but I was wondering if anyone has tried these. If they don't work for my hammock, I suppose they'll work fine for my canoe or kayak.
If anyone has any experience with these, I'd appreciate hearing from you.